Tag: vision assessment

January 22, 2026 / Mohammed looti

CONSENSUAL EYE REFLEX

Introduction to the Consensual Eye Reflex (CER) The Consensual Eye Reflex (CER), also formally known as the consensual pupillary light reflex, represents a fundamental and critical component of the human nervous system’s response to light stimuli. This reflex is defined by the phenomenon wherein illumination applied to only one eye (the stimulated eye) results in […]

November 21, 2025 / Mohammed looti

PERIMETER

Introduction to the Perimeter and Perimetry The term perimeter, in the context of visual science and psychology, refers specifically to a sophisticated clinical instrument designed to systematically map and quantify the boundaries and sensitivities of the visual field. The visual field encompasses the entire area that can be perceived by the eye when gaze is […]